Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

Catalyst Physician Group

Disclosed Sep 11, 2026248,144 affectedConfirmed

Official notice

What is known

People affected248,144 (as reported by the organization)
DisclosedSep 11, 2026
DiscoveredDec 18, 2025
HappenedDec 2, 2025
AttackNot stated
Data exposedSocial Security numbersHealthDates of birthAddressesNames
SectorHealthcare · US
StatusConfirmed

Sources

Official noticeoag.ca.gov
California Attorney General breach notice: Catalyst Physician Group
Official noticeoag.my.site.com
Texas Attorney General data security breach report BR-0005329: Catalyst Physician Group

Notices filed

Residents of CASep 11
California AGCount not stated
Residents of TXSep 15
Texas AG242,121 people
History of this record
data_types2026-09-25
[] to ["ssn","health","dob","addresses","names"]by backfillSource
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 248144by backfillSource
discovered2026-09-25
empty to 2025-12-18by backfillSource
Added2026-09-25
First recordedby backfillSource

First seen 2026-09-25 (California AG), confirmed by California AG. Record counts are as reported. Not legal advice.

Everything about Catalyst Physician Group